[Bug 1451286] Re: crontab -r deletes cron entries without asking for confirmation

[Terence Eden]

Here's a whole bunch of people who have accidentally run `-r` when they
meant `e` (including me!)

* https://twitter.com/search?q=crontab%20e%20r&src=typed_query
* https://stackoverflow.com/questions/37852940/how-recover-deleted-crontab-r-option
* https://www.reddit.com/r/linux/comments/5h1bh5/psa_do_not_type_crontab_r_when_you_mean_crontab_e/
* https://b3z13r.wordpress.com/2011/02/09/how-to-rebuild-crontab-from-scratch-after-accidentally-typing-crontab-r/

Please can someone to implement the attached patch.

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https://bugs.launchpad.net/bugs/1451286

Title:
  crontab -r deletes cron entries without asking for confirmation

Status in cron package in Ubuntu:
  Confirmed
Status in cron package in Debian:
  New

Bug description:
  type: crontab -r

  Expected use case : should ask user if they really want to delete this
  file, of which there are no backups on the system by default, and may
  take hours to restore by hand, if it's even possible.

  what happens: user's cron entry is deleted with no warning.

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